US9880874B2 - Process operating method and apparatus thereof - Google Patents

Process operating method and apparatus thereof Download PDF

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Publication number
US9880874B2
US9880874B2 US14/469,815 US201414469815A US9880874B2 US 9880874 B2 US9880874 B2 US 9880874B2 US 201414469815 A US201414469815 A US 201414469815A US 9880874 B2 US9880874 B2 US 9880874B2
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application
platform
module
child
sub
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US20150067705A1 (en
Inventor
Hae-Seok Oh
Jeong-Yeon KIM
Dae-Beom PARK
Lae-Hyuk BANG
Chul-Hyung Yang
Gyu-Cheol CHOI
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BANG, LAE-HYUK, CHOI, GYU-CHEOL, KIM, JEONG-YEON, OH, HAE-SEOK, PARK, DAE-BEOM, YANG, CHUL-HYUNG
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
    • G06F9/485—Task life-cycle, e.g. stopping, restarting, resuming execution
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/54—Interprogram communication

Definitions

  • the present disclosure relates to a process operating method in a software platform for driving an electronic device, and an apparatus thereof More particularly, the present disclosure relates to running a sub-module of an application in a child process of the platform.
  • Multi-process processing technology has been considered an important technology in a computing environment.
  • a portable electronic device such as a smart phone, a tablet Personal Computer (PC), or the like, which includes the functions of a portable terminal in addition to the functions of a general PC or a Personal Digital Assistant (PDA)
  • PDA Personal Digital Assistant
  • smart phones or the tablet PCs include a high capacity memory and a high performance CPU, and include a software platform (hereinafter referred to as a platform) for supporting the execution of various applications that require complex and advanced tasks, voice/data communication, interoperation with a PC, or the like.
  • a platform software platform
  • a platform that is driven in an electronic device needs to effectively manage the limited resources, and, thus, a process management module of the platform actively participates in operating the process that is currently driven.
  • the process management module may transfer a process which is relatively less frequently used from a Random Access Memory (RAM), which is a system memory, to a storage memory, so as to overcome the limitation of the limited RAM capacity.
  • RAM Random Access Memory
  • the process management module drives a single process at a time, and supports a driving state transition among a plurality of processes in response to a request from a user or a system so as to make it seem to a user as though the plurality of processes are executed simultaneously.
  • FIG. 1 is a view illustrating an example of a state transition diagram of a process according to the related art.
  • the process management module of the platform defines the state of a process based on a process life cycle policy and uses a method of transitioning the state of the process.
  • the process management module may manage the state of a process by defining the state of the process to be one of the three states: “running,” “ready,” and “blocked.”
  • the “running” state refers to a state in which the process is actually driven by a platform, and a process in a “running” state is loaded to a RAM and the power of the electronic device is used for driving the loaded process.
  • the “ready” state refers to a state that is ready for transition to the “running” state, and a process in a “ready” state is loaded to a RAM but the power of the electronic device is not used.
  • the “blocked” or “suspended blocked” state refers to a state that may be transitioned to the “running” state or “ready” state, and a process in a “blocked” state is not loaded to a RAM and the power of the electronic device is not used.
  • the process management module may transition the state of each process so as to maximally utilize resources of the electronic device based on the process life cycle policy. For example, when the transition frequently occurs among the processes, at least one process is determined to be the “running” or “ready” state. As another example, when a predetermined process requires RAM space with a large capacity, the process that is currently loaded to the RAM as the “ready” state may be deleted from the RAM by transitioning the state to the “blocked” state.
  • an aspect of the present disclosure is to provide a process operating method in a software platform for driving an electronic device, and an apparatus thereof.
  • a process generated to be a child process may be generated by being assigned a property value identical to a parent process generally, such as a priority of the parent process and the like.
  • the child process may have a lower priority than the parent process and thus, may be disadvantageous for real-time processing and the like.
  • the child process may not continuously maintain a “running” state due to the transition of the state of the parent process based on the policy of the process management module.
  • a function that is executed by a predetermined child process may need to be continuously “run” or independently operated, irrespective of the effect from the parent process.
  • the described process operating method may fail to provide appropriate support.
  • embodiments of the present disclosure propose a more effective process operating method.
  • an embodiment of the present disclosure provides a method of enabling an engine module of an application to be operated in a process that is not affected by a life cycle management policy of a process management module.
  • a method of operating a process includes determining an execution application, generating an application process for the determined execution application, loading the determined execution application from a secondary memory to the generated application process, generating a platform child process, which is a child process of a platform process, and loading a previously set sub-module of the application to the platform child process.
  • an electronic device including a process operating device.
  • the electronic device includes a secondary memory configured to store a plurality of applications, and a controller configured to load an application stored in the secondary memory into an internal primary memory so as to control execution of the corresponding application to generate an application process that loads the application and controls the execution of the loaded application, and to control a platform child process that is generated by the platform process and executes a sub-module of the loaded application.
  • a platform structure for operating a process includes a platform process configured to operate an application, an application process configured to load an application and control the execution of the loaded application, and a platform child process generated by the platform process and configured to execute a sub-module of the loaded application, wherein the platform process is configured to generate the platform child process in response to a request from the application process, and to execute a function of loading the sub-module of the application to the platform child process, and wherein the application process is configured to request the platform process to generate the platform child process, and to control communication between the sub-module of the application loaded to the platform child process and a main-module of the application.
  • a process is more effectively operated.
  • an engine module of an application is operated in a process that is not affected by a life cycle management policy of a process management module.
  • FIG. 1 is a view illustrating an example of a state transition diagram of a process according to the related art
  • FIG. 2 is a view illustrating an example of a state transition diagram of a process when an application is executed according to an embodiment of the present disclosure
  • FIGS. 3A and 3B are other views illustrating examples of a state transition diagram of a process when an application is executed according to an embodiment of the present disclosure
  • FIG. 4 is a view illustrating an example of a state transition diagram of a platform process when an application is executed according to an embodiment of the present disclosure
  • FIG. 5 is a functional diagram of an application according to an embodiment of the present disclosure.
  • FIG. 6 is a diagram schematically illustrating processes managed by a process management module of a platform according to an embodiment of the present disclosure
  • FIGS. 7A, 7B, 7C, and 7D are views illustrating examples of a process generating state for executing an application according to an embodiment of the present disclosure
  • FIG. 8 is a block diagram schematically illustrating an electronic device in which embodiments of the present disclosure may be applied and implemented.
  • FIG. 9 is a flowchart illustrating a process operating method according to an embodiment of the present disclosure.
  • process refers to a “running program” corresponding to activity of a CPU in a computing environment, inclusively indicates execution of job or task, and indicates a job that is registered on a kernel and is managed by the kernel.
  • FIG. 2 is a view illustrating an example of a state transition diagram of a process when an application is executed.
  • ⁇ music player> is illustrated as an example of an application.
  • a process operating state will be described from the perspective of execution of an application with reference to FIG. 2 .
  • An application that is currently executed is driven in a process of a “running” state, and an application that is not currently executed is driven in a process of a “ready” or “blocked” state.
  • the application may be functionally divided into a User Interface (UI) function that controls interaction with a user and an engine function that controls the execution of a practical operation, and the embodied parts may be defined to be a UI module and an engine module, respectively, which are described below in relation to various embodiment of the present disclosure.
  • UI User Interface
  • engine module When the UI module and the engine module are configured to operate in a single process, both the UI module and the engine module are loaded to a Random Access Memory (RAM), irrespective of interaction with a user while a corresponding application is executed.
  • a music player may be configured to include a UI module that manages an interface that interacts with a user and an engine module that plays back music.
  • the UI module When background music is played back, the UI module is loaded to the RAM for execution of a corresponding application although the interface that interacts with the user is not needed. Accordingly, in this instance, it is recognized that both a process of the application that is currently executed and a process for playing back the background music are in the running state, as illustrated in FIG. 2 .
  • the UI module that implements a UI function that controls interaction with the user and the engine module that implements an engine function that controls the execution of a practical operation are separately embodied, and each is driven in a separate process so that resources are effectively managed.
  • FIGS. 3A and 3B are views illustrating examples of state transition diagrams of a process when an application is executed.
  • both a process in which a UI module is currently driven and a process in which an engine module is currently driven are put into a “running” state, as shown in FIG. 3A .
  • the process in which the UI module is currently driven is transitioned to a “ready” state or “blocked” state so as to minimize the use of resources, and the process in which the engine module is currently driven maintains the “running” state so as to play back the background music, as shown in FIG. 3B .
  • FIG. 4 is a view illustrating an example of a state transition diagram of a platform process when an application is executed according to an embodiment of the present disclosure.
  • a process is illustrated in which the engine module is driven to be generated as a child process, which is generated by the process in which the UI module is executed, through a “fork( )” function of Linux, “CreateProcess( )” of Windows, or the like.
  • the process in which the engine module is executed may be assigned with a property value identical to a parent process, such as a process priority or the like.
  • the lower priority of the process in which the engine module is executed may be disadvantageous for real-time processing and the like, and may also cause difficulty in continuously maintaining the “running” state due to the policy of a process management module of the platform.
  • FIG. 5 is a functional diagram of an application according to an embodiment of the present disclosure.
  • an application 21 implementing an embodiment of the present disclosure may be configured to include a UI module 210 and an engine module 212 .
  • the UI module 210 controls a function of interaction with a user.
  • the engine module 212 controls a function of executing a practical operation.
  • FIG. 5 illustrates that the application 21 is configured to include the UI module 210 and the engine module 212 according to an embodiment of the present disclosure
  • the application 21 does not necessarily include the UI module 210 and the engine module 212 . That is, an application is formed of at least one module which is functionally distinguished, and the present disclosure may be applied to any application formed of various functional modules through various embodiments of the present disclosure.
  • the application 21 which is executed in a portable electronic device, is formed of the UI module 210 and the engine module 21 . Accordingly, hereinafter, an embodiment of the present disclosure in which the application 21 is formed of the UI module 210 as a main module and the engine module 212 as a sub-module is described.
  • FIG. 6 is a diagram schematically illustrating processes managed by a process management module of a platform according to an embodiment of the present disclosure.
  • a process management module is configured to generate and manage a platform process 30 , a platform child process 33 , and an application process 31 .
  • the platform process 30 manages a process for operating an application, generates the platform child process 33 in response to a request from the application process 31 , and loads a predetermined sub-module, for example, an engine module, from among functional modules of the application, to the platform child process 33 .
  • the platform child process 33 is generated by the platform process 30 and executes a sub-module of the application, for example, an engine module, and has a property identical to the platform process 30 .
  • the application process 31 which is a process for executing an application, requests the platform process 30 to generate the platform child process 33 , and executes communication with a sub-module of an application, which is loaded to the platform child process 33 , for example, an engine module, with another functional module of the application, for example, a UI module which is a main module.
  • FIGS. 7A to 7D are views illustrating examples of a process generating state for executing an application, according to an embodiment of the present disclosure.
  • the platform process 30 exists in a RAM area 122 before an application is executed, and application 21 exists in a storage memory 11 .
  • the application process 31 for executing the application is generated in the RAM area 122 , and the application 21 is loaded from the storage memory 11 to the application process 31 .
  • the loaded application 21 may include the UI module 210 and the engine module 212 .
  • the application process 31 to which the application 21 is loaded, transmits, to the platform process 30 , a request for generating a platform child process, together with information associated with the engine module 212 , as illustrated in FIG. 7C .
  • the platform process 30 that receives the request from the application process 31 generates the platform child process 33 and loads the engine module 212 to the platform child process 33 based on the information included in the request from the application process 31 , as illustrated in FIG. 7D .
  • the engine module 212 of the application 21 may be operated in a process, that is, the platform child process 33 , which is not affected by a life cycle management policy of the process management module with respect to the application process 21 . Accordingly, the engine module 212 of the application 21 is operated in a process (i.e. platform child process 33 ) having a priority identical to the platform process 30 and thus, may be advantageous for real-time processing and the like.
  • the platform child process 33 is generated from the platform process 30 , and a part of the application 21 is separated so as to be executed in the platform child process 33 , and thus unit processes for processing a real-time multi-process function may have a relatively smaller memory foot print than before the separation.
  • context switching may be improved and the load of an entire system may be reduced, and the load of a platform is reduced when a process is switched for real-time processing, which is advantageous for real-time processing.
  • FIG. 8 is a block diagram schematically illustrating an electronic device in which the above-described process operation function may be implemented according to an embodiment of the present disclosure.
  • the electronic device may have a configuration typical of, for example, a portable electronic device, and may be configured to include a controller 10 , a storage memory 11 , a touch screen 13 , an audio processing unit 14 , and a wireless communication unit 16 .
  • the device of FIG. 8 may comprise a structure corresponding to, for example, a smart phone, a portable phone, and the like.
  • various embodiments of the present disclosure may include devices, such as a Portable Multimedia Player (PMP), a Personal Digital Assistant (PDA), an MP3 player, a tablet Personal Computer (PC), a personal navigation device, a portable game console, and the like.
  • the wireless communication unit 16 of FIG. 8 may or may not be included in some embodiments.
  • an electronic device according to an embodiment of the present disclosure may include a notebook or a general PC.
  • the touch screen 13 may be configured to include a display panel 132 that displays output information that is output from a portable electronic device, and an input sensing panel 134 though which a user provides various inputs.
  • the display panel 132 may be generally formed of a Liquid Crystal Display (LCD) screen or an Organic Light Emitting Diodes (OLED) screen having an active matrix or a passive matrix, and may be embodied to be structurally integrated with the input sensing panel 134 .
  • LCD Liquid Crystal Display
  • OLED Organic Light Emitting Diodes
  • the display panel 132 may display various screens associated with various operation states, menu states, the execution of an application, services, or the like of a corresponding portable electronic device.
  • the input sensing panel 134 is configured to include at least one panel that may sense a single or multi-touch input, a drag input, a writing input, a drawing input, and the like provided by a user using various objects such as a finger, an electronic pen (not illustrated), and the like.
  • the wireless communication unit 16 may be a component part that may be included when a corresponding portable electronic device supports a wireless communication function such as a mobile communication function and the like.
  • the wireless communication unit 16 may be configured to include an antenna, a Radio Frequency (RF) unit, and a MOdulator/DEModulator (MODEM).
  • RF Radio Frequency
  • MODEM MOdulator/DEModulator
  • the audio processing unit 14 may include a speaker (SPK) for outputting an audio signal of a portable terminal and a microphone (MIC) for collecting an audio signal. Also, the audio processing unit 14 may include a voice codec for processing an audio signal input and output through the speaker and the microphone, and when a phone call function is executed in association with a mobile communication function, the audio processing unit 14 receives a voice of a user or outputs an audible sound to the user, or outputs processing sounds corresponding to various operations, or outputs sounds corresponding to various digital audio contents, video contents, or the like.
  • SPK speaker
  • MIC microphone
  • the secondary memory 11 which is a storage memory, is a component part for storing various programs and data that may be executed in a portable electronic device.
  • the storage memory 11 may be embodied as a high capacity storage device for storing various applications and various multimedia-related contents.
  • the storage memory 11 may be embodied as a flash memory, a memory card (for example, a Secure Digital (SD) card, a memory stick, and the like) that is installed in a portable electronic device, or the like.
  • the storage memory 11 may be configured to include a Hard Disk Drive (HDD) or a Solid State Drive (SSD).
  • HDD Hard Disk Drive
  • SSD Solid State Drive
  • the controller 10 generally controls the above described functional parts, and controls a flow of data and signals among the functional parts so as to control general operations of a portable electronic device.
  • the controller 10 may control a UI and an execution screen associated with execution of an application to be displayed on the touch screen 13 , and may switch and control an operation of a portable electronic device according to a user input that is input through the touch screen 13 .
  • the controller 10 may be mainly formed of a Central Processor Unit (CPU) 100 (or Application Processor (AP)), include an operation program for operating a basic system of a corresponding electronic device, and include a primary memory 120 which is a system memory for temporarily storing data for executing various operations.
  • the primary memory 120 is configured to generally include an application provided from the secondary memory 11 for executing a predetermined operation of an electronic device and the RAM 122 for temporarily storing data generated while the operation is executed.
  • a process management module 126 is included in the primary memory 120 .
  • the process management module 126 may be configured to execute various functions for managing a process, and executes a spooler function, a job scheduler function, a process scheduler function, and a traffic controller function.
  • the CPU 100 and the primary memory 120 are connected with each other through an internal bus.
  • a software platform according to an embodiment of the present disclosure may be implemented in the first memory 120 , and the process management module 126 may execute a function associated with the software platform.
  • the primary memory 120 may be regarded as a configuration including the RAM 122 and a register or a cache memory of a processor (CPU/AP) for executing an application
  • the secondary memory 11 may be regarded as a memory, besides the primary memory 120 .
  • a portable electronic device may be embodied to include the above described component parts.
  • the portable electronic device may include a power unit including a charger battery and the like, and also, may be configured to fundamentally or additionally include functional parts that are applied to a current mobile communication terminal, such as a Global Positioning System (GPS) unit, a vibration motor, a camera module, and the like.
  • GPS Global Positioning System
  • FIG. 9 is a flowchart illustrating a process operating method according to an embodiment of the present disclosure.
  • the process operating method may be executed under a control of the process management module 126 of FIG. 8 .
  • an execution application corresponding to a request from a user, another event, or the like, is determined.
  • an application process for the determined execution application is generated in a primary memory, for example, a RAM area.
  • the determined execution application is loaded from a storage memory to the generated application process.
  • the loaded application includes a UI module and an engine module.
  • the engine module of the application is determined in a platform process, which is executed when the platform process receives a request for generating a platform child process together with information associated with the engine module, from the application process.
  • the platform process generates the platform child process.
  • the engine module is loaded to the generated child processor.
  • any such software may be stored, for example, in a volatile or non-volatile storage device such as a ROM, a memory such as a RAM, a memory chip, a memory device, or a memory IC, or a recordable optical or magnetic medium such as a CD, a DVD, a magnetic disk, or a magnetic tape, regardless of its ability to be erased or its ability to be re-recorded.
  • a memory which may be included in the mobile terminal corresponds to an example of the storage medium suitable for storing a program or programs including instructions by which the various embodiments of the present disclosure are realized.
  • the present disclosure includes a program that includes a code for implementing an apparatus or a method defined in any claim in the present specification and a machine-readable storage medium that stores such a program. Further, the program may be electronically transferred by a predetermined medium such as a communication signal transferred through a wired or wireless connection, and the present disclosure appropriately includes equivalents of the program.

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  • General Physics & Mathematics (AREA)
  • Stored Programmes (AREA)
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